I am wondering if there is a way to update the clock in Canon cameras when they are connected to a computer to sync to the computers clock. This would be a very hand thing to be able to do when it comes for timing of astronomical events. Relying on the manual way (or even remembering to do it) is a very clumsy way of doing it and not very accurate.

Thanks

BTW software I'm using that can control the 20D is DSLR Focus, Images Plus 3.0, plus the standard Canon software.